US5793143A - Rotor for an electrical machine - Google Patents
Rotor for an electrical machine Download PDFInfo
- Publication number
- US5793143A US5793143A US08/906,548 US90654897A US5793143A US 5793143 A US5793143 A US 5793143A US 90654897 A US90654897 A US 90654897A US 5793143 A US5793143 A US 5793143A
- Authority
- US
- United States
- Prior art keywords
- rotor
- fan
- pole piece
- pole
- recited
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
- H02K21/044—Rotor of the claw pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/243—Rotor cores with salient poles ; Variable reluctance rotors of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Definitions
- the present invention relates generally to electrical machines and more specifically to rotors for electrical machines.
- One challenge in adding permanent magnets to a Lundell rotor concerns securely mounting the magnets in a manner which will retain the magnets at the high speeds at which an alternator rotor rotates. Another challenge is in protecting the magnets from corrosion while in service in the rotor. Corrosion of permanent magnets is disadvantageous because it reduces the structural integrity and magnetic strength of the magnets. Yet a third challenge in adding permanent magnets to a Lundell rotor involves finding the highest efficiency with which to assemble the rotor, given that several more components are now involved. A fourth challenge involves assuring sufficient cooling for the alternator in light of the additional electrical output which is the goal of adding the permanent magnets in the first place.
- the present invention provides a rotor for an electrical machine.
- the rotor comprises first and second pole pieces defining an axis of rotation of the rotor.
- the first pole piece comprises a body and a plurality of pole fingers extending axially from the body of the first pole piece.
- the second pole piece comprises a body and a plurality of pole fingers extending axially from the body of the second pole piece, the pole fingers of the second pole piece intermeshed with the pole fingers of the first pole piece.
- the rotor also comprises a fan affixed for rotation with the first pole piece and the second pole piece, the fan having a plurality of pockets, each pocket containing a permanent magnet.
- Rotors for electrical machines can include embedded permanent magnets and the increased power density and efficiency which the magnets can provide. Further, the design can securely hold the permanent magnets in place, protect against corrosion of the permanent magnets and be assembled with very high efficiency. Rotors according to the present invention can thus provide substantial advantages over alternative designs.
- FIG. 1 is an exploded view of the relevant portions of a rotor 10 for an electrical machine, according to one embodiment of the present invention.
- FIGS. 2A and 2B are two views of pole piece 12 of rotor 10.
- FIGS. 3A and 3B are two views of fan 24 of rotor 10.
- FIG. 4 is an end view of rotor 10 with fan 28 and support member 30 removed.
- FIG. 5 is a cross-sectional side view of rotor 10.
- FIG. 1 an exploded view of the relevant portions of a rotor 10 for an electrical machine.
- rotor 10 will recognize rotor 10 as being generally of the Lundell or "claw pole" type, used widely in motor vehicle alternators.
- Rotor 10 includes a first pole piece 12, a second pole piece 14 and a field coil assembly 16.
- First pole piece 12 and second pole piece 14 are mounted on a shaft 18 and enclose field coil assembly 16.
- pole fingers 20 of first pole piece 12 are intermeshed with pole fingers 22 of second pole piece 14.
- Rotor 10 further includes a first fan 24.
- Fan 24 is located at one axial end of the portion of rotor 10 containing pole pieces 12 and 14. Fan 24 is adjacent first pole piece 12.
- a support plate 26 bridges the tips of the blades of fan 24 to provide added support for the fan blades.
- Rotor 10 also includes a second fan 28.
- Fan 28 is located at the opposite axial end of the portion of rotor 10 containing pole pieces 12 and 14. Fan 28 is adjacent second pole piece 14.
- a support plate 30 bridges the tips of the blades of fan 28 to provide added support for the fan blades.
- FIGS. 2A and 2B are two views of pole piece 12.
- Pole piece 12 is made of a ferromagnetic material and comprises a body 32 and six pole fingers 20 extending axially from body 32.
- Pole piece 12 also includes a hub 34 adapted to fit within field coil assembly 16.
- Second pole piece 14 is preferably identical to first pole piece 12, to provide economies of scale in manufacturing pole pieces 12 and 14.
- Fan 24 is preferably molded of plastic. Fan 24 has six preferably enclosed pockets 36. Each pocket 36 contains an insert-molded permanent magnet 38. Permanent magnets 38 can be of any known permanent magnet material, including but not limited to ferrite and rare earth magnetic material. An advantage of designing pockets 36 to fully enclose magnets 38 is that magnets 38 are then protected from corrosion during service in rotor 10. Each pocket 36 is located so that when fan 24 is assembled into rotor 10, a pocket 36 is pressed under a pole finger 22 of second pole piece 14 and above body 32 of first pole piece 12. This is preferably a very snug or interference fit.
- each pocket 36 can be molded with an opening allowing for insertion of a magnet 38.
- the pocket 36 can then be sealed with a potting material.
- Fan 24 further includes a plurality of fan blades 40.
- Each fan blade 40 has a projection 42.
- Each projection 42 is designed to fit through a complementary opening 44 (see FIG. 1) in support plate 26.
- Support plate 26 is preferably stamped from metal but can be any material which provides added structural support to fan blades 40, particularly during high-speed rotation of rotor 10. After assembly of support plate 26 onto blades 40, projections 42 are preferably heat-staked to hold support plate 26 onto blades 40.
- Fan 24 also includes a plurality of posts 46, each post terminating in a tip 48.
- posts 46 span past pole pieces 12 and 14 to fan 28.
- Fan 28 is identical in all relevant respects to fan 24, except that fan 28 has complementary holes 51 (see FIG. 1) sized to accept tips 48 of posts 46.
- tips 48 are heat-staked to fasten fan 24 to fan 28.
- Fans 24 and 28 are thus affixed for rotation with pole pieces 12 and 14.
- Fans 24 and 28 can be further affixed within rotor 10 to the respective pole pieces 12 and 14 by additional means, such as adhesive. Because fan 28 is coupled to integrally-formed posts 46 of fan 24, fans 24 and 28 can be said to be directly coupled together.
- fan 28 is identical in all relevant respects to fan 24 but for the provision of complementary holes for insertion of tips 48 of posts 46 of fan 24. Accordingly, like fan 24, fan 28 has six pockets 50 (see FIG. 1) which each enclose a permanent magnet. In the assembly of rotor 10, each pocket of fan 28 is pressed under a pole finger 20 of first pole piece 12 and above the body of second pole piece 14. Again, this is preferably a very snug or interference fit.
- FIG. 4 is an end view of rotor 10 with fan 28 and support plate 30 removed for ease in further illustrating rotor 10.
- one pocket 36 is shown in cross-section to reveal the permanent magnet 38 disposed within.
- FIG. 4 also illustrates the locations where posts 46 of fan 24 are routed through rotor 10 for subsequent attachment to fan 28.
- FIG. 4 illustrates the location of each pocket 36 of fan 24 between a pole finger 20 of pole piece 12 and the body of pole piece 14.
- FIG. 5 a cross-sectional side view of rotor 10, with shaft 18 removed for aid in illustration. Visible in FIG. 5 are two pockets 50 of fan 28, with their associated permanent magnets 52 enclosed within. Also visible in FIG. 5 is a tip 48 of a post 46 of fan 24. As was discussed above, the tips 48 are heat-staked to fasten fans 24 and 28 together and to help affix them for rotation with pole pieces 12 and 14.
- FIG. 5 also illustrates some of the projections 42 of the blades 40 of fan 24 and some of the projections 54 of the blades 56 of fan 28. Projections 42 and 54 are heat staked to the respective support plates 26 and 30 of fans 24 and 28.
- FIG. 5 shows tip 48 and projections 42 and 54 prior to heat-staking.
- pole pieces 12 and 14 can also be employed.
- the pole fingers of those pole pieces can be tapered to a reduced lateral dimension at their tips (like a more conventional Lundell rotor). Also, the lateral edges of the pole fingers can be beveled.
- Such an alternative design for pole pieces 12 and 14 may have the benefit of reducing audible noise when the rotor rotates.
- Rotors such as the embodiments of rotor 10 disclosed herein provide many advantages when employed in an electrical machine.
- provision of the permanent magnets provides substantially increased power density and efficiency when compared to standard Lundell rotors.
- the location of the permanent magnets beneath the ends of the pole fingers of pole pieces 12 and 14 provides the added benefit of allowing the pole fingers of each pole piece 12 and 14 to extend over the body of the other pole piece, reducing the overall length of rotor 10. In a typical Lundell rotor, this configuration would cause considerable electromagnetic flux leakage from the pole fingers of one pole piece to the body of the other pole piece.
- the permanent magnets as located in this disclosure greatly reduce or prevent such leakage.
- alternators containing rotors of the design described herein have been shown to provide their increased electrical output with control accomplished by a conventional unidirectional voltage regulator.
- Bi-directional voltage regulators add cost and complexity over conventional unidirectional voltage regulators.
- a further advantage of the rotor design disclosed herein is in the corrosion resistance provided to the permanent magnets by encapsulating them within the pockets of fans 24 and 28. Additionally, support plates 26 and 30 for fans 24 and 28 allow the blades of fans 24 and 28 to be made relatively tall and have considerable structural integrity, even at high rotational speeds of rotor 10. The tall fan blades increase cooling airflow for rotor 10 and for the stator (not shown) of the machine containing rotor 10. Providing support plates 26 and 30 as separate parts from fans 24 and 28 allows significant flexibility in molding fans 24 and 28. Including support plates 26 and 30 as integrally formed with fans 24 and 28 would considerably constrain the ability to mold fans 24 and 28.
- Additional advantages of this embodiment of the present invention are secure retention of the permanent magnets within the pockets of fans 24 and 28 and the increased assembly efficiency of the rotor when the permanent magnets are located within the pockets of fans 24 and 28.
Abstract
Description
Claims (20)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/906,548 US5793143A (en) | 1997-08-05 | 1997-08-05 | Rotor for an electrical machine |
PCT/GB1998/002294 WO1999008365A1 (en) | 1997-08-05 | 1998-07-31 | Rotor for an electrical machine |
JP2000506712A JP2002527015A (en) | 1997-08-05 | 1998-07-31 | Rotor for electric machine |
DE69802196T DE69802196T2 (en) | 1997-08-05 | 1998-07-31 | ROTOR FOR AN ELECTRICAL MACHINE |
AU85523/98A AU8552398A (en) | 1997-08-05 | 1998-07-31 | Rotor for an electrical machine |
EP98936561A EP1002357B1 (en) | 1997-08-05 | 1998-07-31 | Rotor for an electrical machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/906,548 US5793143A (en) | 1997-08-05 | 1997-08-05 | Rotor for an electrical machine |
Publications (1)
Publication Number | Publication Date |
---|---|
US5793143A true US5793143A (en) | 1998-08-11 |
Family
ID=25422639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/906,548 Expired - Lifetime US5793143A (en) | 1997-08-05 | 1997-08-05 | Rotor for an electrical machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US5793143A (en) |
EP (1) | EP1002357B1 (en) |
JP (1) | JP2002527015A (en) |
AU (1) | AU8552398A (en) |
DE (1) | DE69802196T2 (en) |
WO (1) | WO1999008365A1 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5962942A (en) * | 1996-05-31 | 1999-10-05 | The Turbo Genset Company Limited | Rotary electrical machines |
FR2786624A1 (en) * | 1998-11-30 | 2000-06-02 | Valeo Equip Electr Moteur | VEHICLE ALTERNATOR ROTOR WITH PERMANENT MAGNETS |
US6172441B1 (en) | 1999-06-28 | 2001-01-09 | Visteon Global Technologies, Inc. | Rotor assembly |
US6426581B1 (en) | 2000-05-22 | 2002-07-30 | Ford Motor Company | Magnet retainer ring for vehicle alternators |
US20030102756A1 (en) * | 2001-10-24 | 2003-06-05 | Denso Corporation | High electrical and mechanical response structure of motor-generator |
FR2833774A1 (en) * | 2001-12-18 | 2003-06-20 | Valeo Equip Electr Moteur | Double circuit induction rotor for a rotating electric machine, such as a motor or alternator, especially for automotive vehicle |
US6586853B2 (en) * | 2000-01-31 | 2003-07-01 | Hitachi, Ltd. | Rotary cooling fan for an AC generator |
US20040080235A1 (en) * | 2002-10-29 | 2004-04-29 | Visteon Global Technologies, Inc. | High power permanent magnet hybrid alternator rotor |
US6744904B2 (en) * | 2000-09-12 | 2004-06-01 | Citizen Electronics Co., Ltd. | Multifunction acoustic device |
US20040145255A1 (en) * | 2003-01-29 | 2004-07-29 | Buening Duane Joseph | Generator and air deflector |
US20040178697A1 (en) * | 2003-03-13 | 2004-09-16 | York Michael T. | Apparatus and method for retaining a cooling fan |
US6815864B2 (en) * | 2000-07-25 | 2004-11-09 | Mitsubishi Denki Kabushiki Kaisha | AC generator |
US20040250273A1 (en) * | 2001-04-02 | 2004-12-09 | Bellsouth Intellectual Property Corporation | Digital video broadcast device decoder |
US20050156480A1 (en) * | 2004-01-19 | 2005-07-21 | Mitsubishi Denki Kabushiki Kaisha | Electric rotating machine |
WO2005091465A3 (en) * | 2004-02-27 | 2005-12-08 | Valeo Equip Electr Moteur | Rotor assembly, in which at least one inter-claw space is sealed by the fan |
US20060097605A1 (en) * | 2002-10-15 | 2006-05-11 | Mitsubishi Denki Kabushiki Kaisha | Rotor of electric rotating machine |
WO2016075373A1 (en) * | 2014-11-12 | 2016-05-19 | Valeo Equipements Electriques Moteur | Claw-pole rotor for rotary electric machine |
WO2020002828A1 (en) * | 2018-06-27 | 2020-01-02 | Valeo Equipements Electriques Moteur | Pole wheel for a rotor for a rotating electrical machine |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2073361B1 (en) | 2006-10-10 | 2017-08-09 | Mitsubishi Electric Corporation | Dynamoelectric machine |
JP4344395B2 (en) | 2007-07-03 | 2009-10-14 | 三菱電機株式会社 | Rotating electric machine |
WO2009072316A1 (en) * | 2007-12-07 | 2009-06-11 | Mitsubishi Electric Corporation | Rotating electric machine |
JP4974865B2 (en) * | 2007-12-07 | 2012-07-11 | 三菱電機株式会社 | Rotating electric machine |
CN101946390B (en) | 2008-02-13 | 2014-02-19 | 三菱电机株式会社 | Rotating electrical machine |
US8324780B2 (en) | 2008-03-21 | 2012-12-04 | Mitsubishi Electric Corporation | Automotive dynamoelectric machine |
WO2009122596A1 (en) * | 2008-04-01 | 2009-10-08 | 三菱電機株式会社 | Rotary electric machine |
JP4974948B2 (en) * | 2008-04-01 | 2012-07-11 | 三菱電機株式会社 | Rotating electric machine |
WO2009122586A1 (en) * | 2008-04-04 | 2009-10-08 | 三菱電機株式会社 | Rotating electrical machine |
JP5111410B2 (en) * | 2009-02-12 | 2013-01-09 | 三菱電機株式会社 | Rotating electric machine |
WO2012001817A1 (en) * | 2010-07-02 | 2012-01-05 | 株式会社 日立製作所 | Ac generator for vehicle |
CN102971943B (en) | 2010-11-19 | 2015-09-23 | 阿斯莫有限公司 | Rotor and motor |
DE102011087273B4 (en) * | 2011-11-29 | 2015-10-08 | Robert Bosch Gmbh | Electric machine |
JP6014481B2 (en) * | 2012-12-07 | 2016-10-25 | 株式会社日本自動車部品総合研究所 | Rotor for rotating electrical machine for vehicles |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3346749A (en) * | 1965-02-02 | 1967-10-10 | Trw Inc | Self-excited brushless alternator |
US3411027A (en) * | 1965-07-15 | 1968-11-12 | Siemens Ag | Permanent magnet excited electric machine |
US3555327A (en) * | 1969-03-25 | 1971-01-12 | Ambac Ind | Permanent magnet alternator with regulating means |
US4584496A (en) * | 1984-03-23 | 1986-04-22 | Robert Bosch Gmbh | Internally force-ventilated claw-pole alternator, particularly for automotive use |
US4882515A (en) * | 1988-06-03 | 1989-11-21 | General Motors Corporation | Alternating current generator |
US4959577A (en) * | 1989-10-23 | 1990-09-25 | General Motors Corporation | Alternating current generator |
US4972114A (en) * | 1987-02-11 | 1990-11-20 | Robert Bosch Gmbh | Alternating-current generator with claw pole rotor |
US4980595A (en) * | 1987-11-23 | 1990-12-25 | Chrysler Corporation | Multiple magnetic paths machine |
US5047680A (en) * | 1987-12-09 | 1991-09-10 | Astra-Tech Ab | Rotating electrical machine |
US5130595A (en) * | 1987-11-23 | 1992-07-14 | Chrysler Corporation | Multiple magnetic paths machine |
US5132581A (en) * | 1990-02-26 | 1992-07-21 | Nippondenso Co., Ltd. | AC generator with annular permanent magnets |
US5177391A (en) * | 1990-03-14 | 1993-01-05 | Nippondenso Co., Ltd. | Power generating apparatus |
US5382862A (en) * | 1992-07-20 | 1995-01-17 | General Motors Corporation | Alternating current generator rotor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3117019B2 (en) * | 1990-10-26 | 2000-12-11 | 株式会社デンソー | Rotor of rotating electric machine for vehicles |
FR2737617B1 (en) * | 1995-08-02 | 1997-10-24 | Valeo Equip Electr Moteur | ALTERNATOR WITH IMPROVED VENTILATION MEANS, PARTICULARLY FOR MOTOR VEHICLE |
-
1997
- 1997-08-05 US US08/906,548 patent/US5793143A/en not_active Expired - Lifetime
-
1998
- 1998-07-31 WO PCT/GB1998/002294 patent/WO1999008365A1/en active IP Right Grant
- 1998-07-31 DE DE69802196T patent/DE69802196T2/en not_active Expired - Fee Related
- 1998-07-31 EP EP98936561A patent/EP1002357B1/en not_active Expired - Lifetime
- 1998-07-31 AU AU85523/98A patent/AU8552398A/en not_active Abandoned
- 1998-07-31 JP JP2000506712A patent/JP2002527015A/en active Pending
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3346749A (en) * | 1965-02-02 | 1967-10-10 | Trw Inc | Self-excited brushless alternator |
US3411027A (en) * | 1965-07-15 | 1968-11-12 | Siemens Ag | Permanent magnet excited electric machine |
US3555327A (en) * | 1969-03-25 | 1971-01-12 | Ambac Ind | Permanent magnet alternator with regulating means |
US4584496A (en) * | 1984-03-23 | 1986-04-22 | Robert Bosch Gmbh | Internally force-ventilated claw-pole alternator, particularly for automotive use |
US4972114A (en) * | 1987-02-11 | 1990-11-20 | Robert Bosch Gmbh | Alternating-current generator with claw pole rotor |
US4980595A (en) * | 1987-11-23 | 1990-12-25 | Chrysler Corporation | Multiple magnetic paths machine |
US5130595A (en) * | 1987-11-23 | 1992-07-14 | Chrysler Corporation | Multiple magnetic paths machine |
US5047680A (en) * | 1987-12-09 | 1991-09-10 | Astra-Tech Ab | Rotating electrical machine |
US4882515A (en) * | 1988-06-03 | 1989-11-21 | General Motors Corporation | Alternating current generator |
US4959577A (en) * | 1989-10-23 | 1990-09-25 | General Motors Corporation | Alternating current generator |
US5132581A (en) * | 1990-02-26 | 1992-07-21 | Nippondenso Co., Ltd. | AC generator with annular permanent magnets |
US5177391A (en) * | 1990-03-14 | 1993-01-05 | Nippondenso Co., Ltd. | Power generating apparatus |
US5382862A (en) * | 1992-07-20 | 1995-01-17 | General Motors Corporation | Alternating current generator rotor |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5962942A (en) * | 1996-05-31 | 1999-10-05 | The Turbo Genset Company Limited | Rotary electrical machines |
FR2786624A1 (en) * | 1998-11-30 | 2000-06-02 | Valeo Equip Electr Moteur | VEHICLE ALTERNATOR ROTOR WITH PERMANENT MAGNETS |
WO2000033439A1 (en) * | 1998-11-30 | 2000-06-08 | Valeo Equipements Electriques Moteur | Motor vehicle alternator rotor with interposed permanent magnets |
US6369486B1 (en) | 1998-11-30 | 2002-04-09 | Valeo Equipment Electriques Moteur | Motor vehicle alternator rotor with interposed permanent magnets |
US6172441B1 (en) | 1999-06-28 | 2001-01-09 | Visteon Global Technologies, Inc. | Rotor assembly |
US6586853B2 (en) * | 2000-01-31 | 2003-07-01 | Hitachi, Ltd. | Rotary cooling fan for an AC generator |
US6426581B1 (en) | 2000-05-22 | 2002-07-30 | Ford Motor Company | Magnet retainer ring for vehicle alternators |
US6815864B2 (en) * | 2000-07-25 | 2004-11-09 | Mitsubishi Denki Kabushiki Kaisha | AC generator |
US6744904B2 (en) * | 2000-09-12 | 2004-06-01 | Citizen Electronics Co., Ltd. | Multifunction acoustic device |
US20040250273A1 (en) * | 2001-04-02 | 2004-12-09 | Bellsouth Intellectual Property Corporation | Digital video broadcast device decoder |
US20030102756A1 (en) * | 2001-10-24 | 2003-06-05 | Denso Corporation | High electrical and mechanical response structure of motor-generator |
US6724115B2 (en) * | 2001-10-24 | 2004-04-20 | Denso Corporation | High electrical and mechanical response structure of motor-generator |
FR2833774A1 (en) * | 2001-12-18 | 2003-06-20 | Valeo Equip Electr Moteur | Double circuit induction rotor for a rotating electric machine, such as a motor or alternator, especially for automotive vehicle |
US20060097605A1 (en) * | 2002-10-15 | 2006-05-11 | Mitsubishi Denki Kabushiki Kaisha | Rotor of electric rotating machine |
US7466059B2 (en) * | 2002-10-15 | 2008-12-16 | Mitsubishi Denki Kabushiki Kaisha | Rotor of electric rotating machine |
US6744165B2 (en) * | 2002-10-29 | 2004-06-01 | Visteon Global Technologies, Inc. | High power permanent magnet hybrid alternator rotor |
US20040080235A1 (en) * | 2002-10-29 | 2004-04-29 | Visteon Global Technologies, Inc. | High power permanent magnet hybrid alternator rotor |
US20040145255A1 (en) * | 2003-01-29 | 2004-07-29 | Buening Duane Joseph | Generator and air deflector |
US6781262B2 (en) * | 2003-01-29 | 2004-08-24 | Delphi Technologies, Inc. | Generator and air deflector |
US6812602B2 (en) * | 2003-03-13 | 2004-11-02 | Visteon Global Technologies, Inc. | Apparatus and method for retaining a cooling fan |
US20040178697A1 (en) * | 2003-03-13 | 2004-09-16 | York Michael T. | Apparatus and method for retaining a cooling fan |
US20050156480A1 (en) * | 2004-01-19 | 2005-07-21 | Mitsubishi Denki Kabushiki Kaisha | Electric rotating machine |
US7208856B2 (en) * | 2004-01-19 | 2007-04-24 | Mitsubishi Denki Kabushiki Kaisha | Electric rotating machine |
WO2005091465A3 (en) * | 2004-02-27 | 2005-12-08 | Valeo Equip Electr Moteur | Rotor assembly, in which at least one inter-claw space is sealed by the fan |
US20090085417A1 (en) * | 2004-02-27 | 2009-04-02 | Claudiu Vasilescu | Rotor assembly, in which at least one inter-claw space is sealed by the fan |
US8803396B2 (en) * | 2004-02-27 | 2014-08-12 | Valeo Equipements Electriques Moteur | Rotor assembly, in which at least one inter-claw space is sealed by the fan |
WO2016075373A1 (en) * | 2014-11-12 | 2016-05-19 | Valeo Equipements Electriques Moteur | Claw-pole rotor for rotary electric machine |
WO2020002828A1 (en) * | 2018-06-27 | 2020-01-02 | Valeo Equipements Electriques Moteur | Pole wheel for a rotor for a rotating electrical machine |
FR3083389A1 (en) * | 2018-06-27 | 2020-01-03 | Valeo Equipements Electriques Moteur | POLAR ROTOR WHEEL FOR ROTATING ELECTRIC MACHINE |
Also Published As
Publication number | Publication date |
---|---|
DE69802196D1 (en) | 2001-11-29 |
EP1002357A1 (en) | 2000-05-24 |
AU8552398A (en) | 1999-03-01 |
WO1999008365A1 (en) | 1999-02-18 |
JP2002527015A (en) | 2002-08-20 |
DE69802196T2 (en) | 2002-07-04 |
EP1002357B1 (en) | 2001-10-24 |
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